2 Answers

I had the same problem and tried everything. Nothing worked, so I started randomly pushing and holding buttons ON the TV until one combination worked! My Panasonic has two buttons on the TV set for adjusting the picture. Hold down one of them and simultaneously hold down the Channel Up button. If that doesn't work, try the same procedure with the OTHER picture adjustment button. It worked for me. Good Luck!

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CNETI just bought a Samsung LN46B650 and it is stuck in Store Demo mode. ... If you do get prompted to choose between HOME or STORE mode (and you might), ... on the tvfor 10-15 sec(i did almost 30)...but the store demo mode wont turn off.

to deactive demo mode press menu on the remote...then w/that screen up push the screen mode little gray button at the top of the remote...note that this will not change anything on the screen...i know weird huh...now type in the numbers 9012 you should now be at a new menu the top opption is demo mode...choose it and then choose on or off...good luck i see this i an old post but i hope it helps someone...